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Is there other proof of Pascal Points on the sides of the quadrilateral theorem?

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#geometry #euclidean-geometry #circles #projective-geometry #quadrilateral
2.1k
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Determine equations of line in projective space

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#projective-geometry #projective-space
2.1k
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How to project 3D vector on unit sphere to 2D in $xz$ plane?

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#trigonometry #projective-geometry #spherical-coordinates #spherical-geometry #python
21
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Determine projective planes in $\mathbb{RP}^4$

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#projective-geometry #projective-space
107
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Points and lines in an infinite projective plane

Published on
#combinatorics #projective-geometry
30
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Having only a perspective matrix, how can I accurately obtain the frustrum's origin point?

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#matrices #projective-geometry #projection-matrices
4k
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Proof any five points determine a conic

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#linear-algebra #matrices #algebraic-geometry #projective-geometry #matrix-rank
501
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Determine points with same coordinates in two projective references

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#projective-geometry #projective-space
51
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Intersection between $\mathbb{R}P^2$ and $\mathbb{C}P^1$

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#linear-algebra #algebraic-topology #projective-geometry #intersection-theory
63
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Conic bundle: find the locus of the centers

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#linear-algebra #geometry #conic-sections #projective-geometry
85
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The orbit of endomorphisms on a projective space

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#projective-geometry #group-actions #projective-space
332
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Inverse projective transformation: given $\varphi_A:\mathbb{P^3}\to \mathbb{P^3}$ and a line $r$, find $\varphi_A^{-1}(r)$

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#linear-algebra #geometry #linear-transformations #projective-geometry
516
Views

How can affine plane extended of projective plane?

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#geometry #projective-geometry #affine-geometry #axiomatic-geometry
107
Views

What is the shape traced by the tip of shadow by a tilted stick?

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#geometry #contest-math #conic-sections #projective-geometry
60
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A set P of parabolas through a point P not at infinity, whose axis r∉P, is a bundle of parabolas?

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#linear-algebra #geometry #conic-sections #projective-geometry

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